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mediafinder.js
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'use strict';
var querystring = require('querystring');
var request = require('request');
var jsdom = require('jsdom');
var pos = require('pos');
var URL = require('url');
var Step = require('./step.js');
var twitter = require('node-twitter');
var env = require('node-env-file');
if (require('fs').existsSync(__dirname + '/.env')) {
env(__dirname + '/.env');
}
var GLOBAL_config = {
DEBUG: true,
TRANSLATE: false,
PART_OF_SPEECH: false,
NAMED_ENTITY_EXTRACTION: false,
USE_GOOGLE_RESEARCH_API: false,
MOBYPICTURE_KEY: process.env.MOBYPICTURE_KEY,
FLICKR_SECRET: process.env.FLICKR_SECRET,
FLICKR_KEY: process.env.FLICKR_KEY,
YFROG_KEY: process.env.YFROG_KEY,
INSTAGRAM_KEY: process.env.INSTAGRAM_KEY,
INSTAGRAM_SECRET: process.env.INSTAGRAM_SECRET,
GOOGLE_KEY: process.env.GOOGLE_KEY,
GOOGLE_RESEARCH_API_KEY: process.env.GOOGLE_RESEARCH_API_KEY,
IMGUR_KEY: process.env.IMGUR_KEY,
TWITTER_CONSUMER_KEY: process.env.TWITTER_CONSUMER_KEY,
TWITTER_CONSUMER_SECRET: process.env.TWITTER_CONSUMER_SECRET,
TWITTER_ACCESS_TOKEN_KEY: process.env.TWITTER_ACCESS_TOKEN_KEY,
TWITTER_ACCESS_TOKEN_SECRET: process.env.TWITTER_ACCESS_TOKEN_SECRET,
FACEBOOK_APP_ID: process.env.FACEBOOK_APP_ID,
FACEBOOK_APP_SECRET: process.env.FACEBOOK_APP_SECRET,
HEADERS: {
'Accept': 'application/json, text/javascript, */*',
'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
'Accept-Language': 'en-US,en;q=0.8,fr-FR;q=0.6,fr;q=0.4,de;q=0.2,de-DE;' +
'q=0.2,es;q=0.2,ca;q=0.2',
'Connection': 'keep-alive',
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
'Referer': 'http://www.google.com/',
'User-Agent': null
},
MEDIA_PLATFORMS: [
'yfrog.com',
'instagr.am',
'instagram.com',
'flic.kr',
'flickr.com',
'moby.to',
'youtu.be',
'youtube.com',
'twitpic.com',
'picplz.com',
'qik.com',
'ustre.am',
'twitvid.com',
'photobucket.com',
'pic.twitter.com',
'i.imgur.com',
'picasaweb.google.com',
'twitgoo.com',
'vimeo.com',
'img.ly',
'mypict.me',
'vine.co'
],
/* jshint maxlen:false */
URL_REGEX: /\b((?:[a-z][\w\-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))/ig,
INSTAGRAM_REGEX: /[^0-9A-Za-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0\u08A2-\u08AC\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097F\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C33\u0C35-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191C\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA697\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA793\uA7A0-\uA7AA\uA7F8-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA80-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/g,
/* jshint maxlen:80 */
HASHTAG_REGEX: /(^|\s)\#(\S+)/g,
USER_REGEX: /(^|\W)\@([a-zA-Z0-9_]+)/g,
PLUS_REGEX: /(^|\W)\+([a-zA-Z0-9_]+)/g,
TAG_REGEX: /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi
};
var twit = new twitter.SearchClient(
GLOBAL_config.TWITTER_CONSUMER_KEY,
GLOBAL_config.TWITTER_CONSUMER_SECRET,
GLOBAL_config.TWITTER_ACCESS_TOKEN_KEY,
GLOBAL_config.TWITTER_ACCESS_TOKEN_SECRET
);
var mediaFinder = {
search: function search(service, query, userAgent, callback) {
GLOBAL_config.HEADERS['User-Agent'] = userAgent ||
'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 ' +
'(KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36';
/**
* From https://developer.mozilla.org/en/JavaScript/Reference/Global_-
* Objects/Date#Example:_ISO_8601_formatted_dates
*/
function getIsoDateString(d) {
function pad(n) { return n < 10 ? '0' + n : n; }
d = new Date(d);
return d.getUTCFullYear() + '-' +
pad(d.getUTCMonth() + 1) + '-' +
pad(d.getUTCDate()) + 'T' +
pad(d.getUTCHours()) + ':' +
pad(d.getUTCMinutes()) + ':' +
pad(d.getUTCSeconds()) + 'Z';
}
/**
* Cleans video URLs, tries to convert YouTube URLS to HTML5 versions
* Core bits adapted from https://github.com/endlesshack/youtube-video
*/
function cleanVideoUrl(url, callback) {
var decodeQueryString = function(queryString) {
var key, keyValPair, keyValPairs, r, val, _i, _len;
r = {};
keyValPairs = queryString.split('&');
for (_i = 0, _len = keyValPairs.length; _i < _len; _i++) {
keyValPair = keyValPairs[_i];
key = decodeURIComponent(keyValPair.split('=')[0]);
val = decodeURIComponent(keyValPair.split('=')[1] || '');
r[key] = val;
}
return r;
};
var decodeStreamMap = function(url_encoded_fmt_stream_map) {
var quality, sources, stream, type, urlEncodedStream, _i, _len, _ref;
sources = {};
_ref = url_encoded_fmt_stream_map.split(',');
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
urlEncodedStream = _ref[_i];
if (!urlEncodedStream) {
return false;
}
stream = decodeQueryString(urlEncodedStream);
type = stream.type.split(';')[0];
quality = stream.quality.split(',')[0];
stream.original_url = stream.url;
stream.url = '' + stream.url + '&signature=' + stream.sig;
sources['' + type + ' ' + quality] = stream;
}
return sources;
};
// Possible URL patterns
// http://www.youtube.com/v/WnszesKUXp8
// http://www.youtube.com/watch?v=EVBsypHzF3U
// http://www.youtube.com/watch?v=-qzRe325AQU&feature=youtube_gdata_player
// http://youtu.be/EVBsypHzF3U
var extractYouTubeVideoId = function(url) {
var urlObj = URL.parse(url);
var pathComponents = urlObj.pathname.split(/\//g);
var videoId;
if (pathComponents[1] === 'v') {
videoId = pathComponents[2];
} else if (pathComponents[1] === 'watch') {
var query = urlObj.query;
query.split(/&/g).forEach(function(param) {
var keyValue = param.split(/=/);
if (keyValue[0] === 'v') {
videoId = keyValue[1];
}
});
} else {
videoId = pathComponents[1];
}
return videoId;
};
// if is YouTube URL
if ((url.indexOf('http://www.youtube.com') === 0) ||
(url.indexOf('https://www.youtube.com') === 0) ||
(url.indexOf('http://youtu.be') === 0)) {
try {
var videoId = extractYouTubeVideoId(url);
// Translate to HTML5 video URL, try at least
var options = {
headers: {
'User-Agent': GLOBAL_config.HEADERS['User-Agent']
},
url: 'http://www.youtube.com/get_video_info?video_id=' + videoId
};
request.get(options, function(err, reply, body) {
var video;
if (!body) {
return callback(url);
}
video = decodeQueryString(body);
// video.live_playback is '1' for Hangouts on Air
if (video.status === 'fail' || video.live_playback) {
return callback(url);
}
if (!video.url_encoded_fmt_stream_map) {
return callback(url);
}
video.sources = decodeStreamMap(video.url_encoded_fmt_stream_map);
if (!video.sources) {
return callback(url);
}
video.getSource = function(type, quality) {
var exact, key, lowest, source, _ref;
lowest = null;
exact = null;
_ref = this.sources;
for (key in _ref) {
source = _ref[key];
if (source.type.match(type)) {
if (source.quality.match(quality)) {
exact = source;
} else {
lowest = source;
}
}
}
return exact || lowest;
};
var webm = video.getSource('video/webm', 'medium');
var mp4 = video.getSource('video/mp4', 'medium');
if (webm) {
return callback(webm.url, videoId);
} else if (mp4) {
return callback(mp4.url, videoId);
} else {
return callback(url, videoId);
}
});
} catch(e) {
callback(url);
}
} else {
callback(url);
}
}
/**
* Replaces HTML entities
*/
function replaceHtmlEntities(micropost) {
micropost = micropost.replace(/"/gi, '\"');
micropost = micropost.replace(/'/gi, '\'');
micropost = micropost.replace(/'/gi, '\'');
micropost = micropost.replace(/&/gi, '&');
micropost = micropost.replace(/>/gi, '>');
micropost = micropost.replace(/</gi, '<');
return micropost;
}
/**
* Removes line breaks, double spaces, HTML tags, HTML entities, etc.
*/
function cleanMicropost(micropost) {
function strip_tags(input, allowed) {
// making sure the allowed arg is a string containing only tags in
// lowercase (<a><b><c>)
allowed = (((allowed || '') + '').toLowerCase()
.match(/<[a-z][a-z0-9]*>/g) || []).join('');
var tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi,
commentsAndPhpTags = /<!--[\s\S]*?-->|<\?(?:php)?[\s\S]*?\?>/gi;
return input.replace(commentsAndPhpTags, '').replace(tags,
function($0, $1) {
return allowed.indexOf('<' + $1.toLowerCase() + '>') > -1 ? $0 : '';
});
}
if (micropost) {
// replace HTML entities
micropost = replaceHtmlEntities(micropost);
// remove HTML tags. regular expression stolen from
var cleanedMicropost = strip_tags(micropost);
//all regular expressions below stolen from
// https://raw.github.com/cramforce/streamie/master/public/lib/stream/-
// streamplugins.js
//
// remove urls
cleanedMicropost = cleanedMicropost
.replace(GLOBAL_config.URL_REGEX, ' ');
// simplify #hashtags to hashtags
cleanedMicropost = cleanedMicropost
.replace(GLOBAL_config.HASHTAG_REGEX, ' $2');
// simplify @username to username
cleanedMicropost = cleanedMicropost
.replace(GLOBAL_config.USER_REGEX, ' $2');
// simplify +username to username
cleanedMicropost = cleanedMicropost
.replace(GLOBAL_config.PLUS_REGEX, ' $2');
// replace line feeds and duplicate spaces
micropost = micropost.replace(/[\n\r\t]/gi, ' ').replace(/\s+/g, ' ');
cleanedMicropost = cleanedMicropost
.replace(/[\n\r\t]/gi, ' ').replace(/\s+/g, ' ');
return {
html: micropost.trim(),
plainText: cleanedMicropost.trim()
};
} else {
return {
html: '',
plainText: ''
};
}
}
/**
* Scrapes Vine
*/
function scrapeVine(body, callback) {
var mediaUrl = false;
var posterUrl = false;
if (!body) {
callback(false);
}
try {
jsdom.env(body, function(errors, window) {
if (errors) {
return callback(false);
}
var $ = window.document;
try {
var metas = $.getElementsByTagName('META');
if (metas.length > 0) {
for (var i = 0, len = metas.length; i < len; i++) {
var meta = metas[i];
if (meta.getAttribute('property') === 'twitter:image') {
posterUrl = meta.getAttribute('content');
}
if (meta.getAttribute('property') === 'twitter:player:stream') {
mediaUrl = meta.getAttribute('content');
}
}
}
if (posterUrl && mediaUrl) {
callback(mediaUrl, posterUrl);
} else {
callback(false);
}
} catch(e) {
callback(false);
}
});
} catch(e) {
callback(false);
}
}
/**
* Scrapes TwitPic
*/
function scrapeTwitPic(body, callback) {
var mediaUrl = false;
var type = false;
if (!body) {
callback(false);
}
try {
jsdom.env(body, function(errors, window) {
if (errors) {
return callback(false);
}
var $ = window.document;
try {
if ($.getElementsByTagName('VIDEO').length > 0) {
mediaUrl = body.substring(body.indexOf('<source src="') +
('<source src="'.length));
mediaUrl = mediaUrl.substring(0, mediaUrl.indexOf('"'));
type = 'video';
} else {
mediaUrl = $.getElementsByTagName('IMG')[1].src;
type = 'photo';
}
callback(mediaUrl, type);
} catch(e) {
if (body.indexOf('error') === -1) {
throw('ERROR: TwitPic screen scraper broken');
}
callback(false);
}
});
} catch(e) {
callback(false);
}
}
/**
* Scrapes img.ly
*/
function scrapeImgLy(body, callback) {
var mediaUrl = false;
if (!body) {
callback(false);
}
try {
jsdom.env(body, function(errors, window) {
if (errors) {
return callback(false);
}
var $ = window.document;
var match = 'the-image';
try {
var image = $.getElementById(match);
if (image) {
mediaUrl = image.src;
callback(mediaUrl);
} else {
callback(false);
}
} catch(e) {
throw('ERROR: img.ly screen scraper broken');
}
});
} catch(e) {
callback(false);
}
}
/**
* Annotates microposts with DBpedia Spotlight
*/
function spotlight(json) {
if (!GLOBAL_config.NAMED_ENTITY_EXTRACTION) {
return sendResults(json);
}
if (GLOBAL_config.DEBUG) { console.log('spotlight'); }
var currentService = 'DBpediaSpotlight';
var options = {
headers: {
'Accept': 'application/json'
},
body: ''
};
var collector = {};
var httpMethod = 'POST'; // 'GET';
options.method = httpMethod;
Step(
function() {
var group = this.group();
var services = typeof json === 'object' ? Object.keys(json) : [];
services.forEach(function(serviceName) {
var service = json[serviceName] || [];
collector[serviceName] = [];
service.forEach(function(item, i) {
var text;
if ((item.micropost.translation) &&
(item.micropost.translation.text) &&
(item.micropost.translation.language !== 'en')) {
// for non-English texts, use the translation if it exists
text = item.micropost.translation.text;
} else {
// use the original version
text = item.micropost.clean;
}
if (httpMethod === 'POST') {
options.headers['Content-Type'] =
'application/x-www-form-urlencoded; charset=UTF-8';
// non-testing env:
// 'http://spotlight.dbpedia.org/rest/annotate';
options.url = 'http://spotlight.dbpedia.org/dev/rest/annotate';
options.body =
'text=' + encodeURIComponent(text) +
'&confidence=0.2&support=20';
} else {
// non-testing env:
// 'http://spotlight.dbpedia.org/rest/annotate' +
options.url = 'http://spotlight.dbpedia.org/dev/rest/annotate' +
'?text=' + encodeURIComponent(text) +
'&confidence=0.2&support=20';
}
var cb = group();
request(options, function(err, res, body) {
if (!err && res.statusCode === 200) {
var response;
try {
response = JSON.parse(body);
} catch(e) {
// error
collector[serviceName][i] = [];
return cb(null);
}
if (response.Error || !response.Resources) {
// error
collector[serviceName][i] = [];
return cb(null);
}
var entities = [];
if (response.Resources) {
var uris = {};
var resources = response.Resources;
for (var j = 0, len = resources.length; j < len; j++) {
var entity = resources[j];
// the value of entity['@URI'] is not unique, but we only
// need it once, we simply don't care about the other
// occurrences
var currentUri = entity['@URI'];
if (!uris[currentUri]) {
uris[currentUri] = true;
entities.push({
name: entity['@surfaceForm'],
relevance: parseFloat(entity['@similarityScore']),
uris: [{
uri: currentUri,
source: currentService
}],
source: currentService
});
}
}
}
// success
collector[serviceName][i] = entities;
} else {
// error
collector[serviceName][i] = [];
}
cb(null);
});
});
});
},
function() {
var services = typeof json === 'object' ? Object.keys(json) : [];
services.forEach(function(serviceName) {
var service = json[serviceName] || [];
service.forEach(function(item, i) {
item.micropost.entities = collector[serviceName][i];
// part of speech tagging, PoS
if (GLOBAL_config.PART_OF_SPEECH) {
var words;
if ((item.micropost.translation) &&
(item.micropost.translation.text) &&
(item.micropost.translation.language !== 'en')) {
// for non-English texts, use the translation if it exists
words = new pos.Lexer().lex(item.micropost.translation.text);
} else {
words = new pos.Lexer().lex(item.micropost.clean);
}
var taggedWords = new pos.POSTagger().tag(words);
var result = [];
for (var j = 0, len = taggedWords.length; j < len; j++) {
var taggedWord = taggedWords[j];
// for all recognized noun types
if ((taggedWord[1] === 'NNS') ||
(taggedWord[1] === 'NNPS') ||
(taggedWord[1] === 'NNP')) {
var word = taggedWord[0];
var tag = taggedWord[2];
result.push({
word: word.toLowerCase(),
tag: tag
});
}
item.micropost.nouns = result;
}
}
});
});
sendResults(json);
}
);
}
/**
* Translates microposts one by one
*/
function translate(json) {
if (GLOBAL_config.DEBUG) { console.log('translate'); }
var options;
if (GLOBAL_config.USE_GOOGLE_RESEARCH_API) {
/*
options = {
headers: {
'X-HTTP-Method-Override': 'GET',
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
'Authorization': 'GoogleLogin auth=' +
GLOBAL_config.GOOGLE_RESEARCH_API_KEY
},
method: 'POST',
url: 'http://translate.google.com/researchapi/translate',
body: 'tl=en'
};
*/
options = {
headers: {
'X-HTTP-Method-Override': 'GET',
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
'Authorization': 'GoogleLogin auth=' +
GLOBAL_config.GOOGLE_RESEARCH_API_KEY
},
method: 'POST',
url: 'https://www.googleapis.com/language/translate/v2',
body: 'key=' + GLOBAL_config.GOOGLE_RESEARCH_API_KEY + '&target=en'
};
} else {
options = {
headers: {
'X-HTTP-Method-Override': 'GET',
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
},
method: 'POST',
url: 'https://www.googleapis.com/language/translate/v2',
body: 'key=' + GLOBAL_config.GOOGLE_KEY + '&target=en'
};
}
var collector = {};
Step(
function() {
var group = this.group();
var services = typeof json === 'object' ? Object.keys(json) : [];
services.forEach(function(serviceName) {
var cb = group();
var service = json[serviceName] || [];
collector[serviceName] = [];
service.forEach(function(item, i) {
var text = item.micropost.clean;
if (GLOBAL_config.USE_GOOGLE_RESEARCH_API) {
//options.body = 'tl=en&q=' + encodeURIComponent(text);
options.body += '&q=' + encodeURIComponent(text);
} else {
options.body += '&q=' + encodeURIComponent(text);
}
collector[serviceName][i] = {
text: '',
language: ''
};
});
request(options, function(err1, res1, body) {
// FixMe console.log(JSON.stringify(options))
var response;
/* jshint noempty:false */
if (GLOBAL_config.USE_GOOGLE_RESEARCH_API) {
// FixMe console.log('hello')
// FixMe res.send(body);
} else { /* jshint noempty:true */
if (!err1 && res1.statusCode === 200) {
try {
response = JSON.parse(body);
} catch(e) {
// error
return cb(null);
}
if ((response.data) &&
(response.data.translations) &&
(Array.isArray(response.data.translations))) {
response.data.translations.forEach(
function(translation, j) {
collector[serviceName][j] = {
text: replaceHtmlEntities(translation.translatedText),
language: translation.detectedSourceLanguage
};
});
}
} else {
// error
return cb(null);
}
}
cb(null);
});
});
},
function() {
var services = typeof json === 'object' ? Object.keys(json) : [];
services.forEach(function(serviceName) {
var service = json[serviceName] || [];
service.forEach(function(item, i) {
item.micropost.translation = collector[serviceName][i];
});
});
spotlight(json);
}
);
}
/**
* Collects results to be sent back to the client
*/
function collectResults(json, service, pendingRequests) {
if (GLOBAL_config.DEBUG) { console.log('collectResults for ' + service); }
/* global io:false */
if (typeof io !== 'undefined') {
io.sockets.emit('mediaResults', {
service: service
});
}
if (!pendingRequests) {
if (service !== 'combined') {
var temp = json;
json = {};
json[service] = temp;
}
// make sure that after a timeout, where a service's result can still be
// the initial value of boolean false, we set the value to empty array
var services = typeof json === 'object' ? Object.keys(json) : [];
services.forEach(function(serviceName) {
if (json[serviceName] === false) {
json[serviceName] = [];
}
});
if (GLOBAL_config.TRANSLATE) {
translate(json);
} else {
spotlight(json);
}
} else {
pendingRequests[service] = json;
}
}
/**
* Sends results back to the client
*/
function sendResults(json) {
if (GLOBAL_config.DEBUG) { console.log('sendResults'); }
callback(json);
}
var services = {
GooglePlus: function(pendingRequests) {
var currentService = 'GooglePlus';
if (GLOBAL_config.DEBUG) {
console.log(currentService + ' *** ' + query);
}
var options = {
url: 'https://www.googleapis.com/plus/v1/activities?query=' +
encodeURIComponent(query) +
'&orderBy=recent&key=' + GLOBAL_config.GOOGLE_KEY,
headers: GLOBAL_config.HEADERS
};
if (GLOBAL_config.DEBUG) {
console.log(currentService + ' ' + options.url);
}
request.get(options, function(err, reply, body) {
var results = [];
try {
body = JSON.parse(body);
if (body.items && Array.isArray(body.items) && body.items.length) {
var itemsLength = body.items.length;
body.items.forEach(function(item, processedItems) {
// only treat posts, notes, and shares, no check-ins
if (((item.verb === 'share') ||
(item.verb === 'post') ||
(item.verb === 'note')) &&
(item.object.attachments) &&
(Array.isArray(item.object.attachments))) {
item.object.attachments.forEach(function(attachment) {
// only treat photos, videos, and articles
if ((attachment.objectType !== 'photo') &&
(attachment.objectType !== 'video') &&
(attachment.objectType !== 'article')) {
processedItems++;
if (processedItems === itemsLength) {
collectResults(results, currentService,
pendingRequests);
}
return;
}
// the micropost can consist of different parts, dependent
// on the item type
var micropost = cleanMicropost(
(item.object.content ?
item.object.content : '') +
(item.title ?
' ' + item.title : '') +
(item.annotation ?
' ' + item.annotation : '') +
(attachment.displayName ?
' ' + attachment.displayName : ''));
if (micropost) {
var mediaUrl = '';
if (attachment.embed) {
mediaUrl = attachment.embed.url;
} else if (attachment.fullImage) {
mediaUrl = attachment.fullImage.url;
}
cleanVideoUrl(mediaUrl, function(cleanedMediaUrl) {
processedItems++;
if (cleanedMediaUrl) {
results.push({
mediaUrl: cleanedMediaUrl,
posterUrl: attachment.image.url,
micropostUrl: item.url,
micropost: micropost,
userProfileUrl: item.actor.url,
type: attachment.objectType === 'video' ?
'video' : 'photo',
timestamp: (new Date(item.published)).getTime(),
publicationDate: item.published,
socialInteractions: {
likes: item.object.plusoners.totalItems,
shares: item.object.resharers.totalItems,
comments: item.object.replies.totalItems,
views: null
}
});
}
if (processedItems === itemsLength) {
collectResults(results, currentService,
pendingRequests);
}
});
} else {
processedItems++;
if (processedItems === itemsLength) {
collectResults(results, currentService,
pendingRequests);
}
}
});
} else {
processedItems++;
if (processedItems === itemsLength) {
collectResults(results, currentService, pendingRequests);
}
}
});
} else {
collectResults(results, currentService, pendingRequests);
}
} catch(e) {
collectResults(results, currentService, pendingRequests);
}
});
},
Facebook: function(pendingRequests) {
var currentService = 'Facebook';
if (GLOBAL_config.DEBUG) {
console.log(currentService + ' *** ' + query);
}
var params = {
q: query,
limit: 100,
fields: 'comments,type,created_time,name,caption,description,' +
'source,picture,id,from,likes,shares',
access_token: GLOBAL_config.FACEBOOK_APP_ID + '|' +
GLOBAL_config.FACEBOOK_APP_SECRET
};
params = querystring.stringify(params);
var options = {
url: 'https://graph.facebook.com/search?' + params + '&type=post',
headers: GLOBAL_config.HEADERS
};
if (GLOBAL_config.DEBUG) {
console.log(currentService + ' ' + options.url);
}
request.get(options, function(err, reply, body) {
try {
body = JSON.parse(body);
var results = [];
if ((body.data) && (body.data.length)) {
var items = body.data;
Step(
function() {
var group = this.group();
items.forEach(function(item) {
var cb = group();
if (item.type !== 'photo' && item.type !== 'video') {
return cb(null);
}
var timestamp = Date.parse(item.created_time);
var micropost = '';
micropost += (item.name ? item.name : '');
micropost += (item.caption ?
(micropost.length ? '. ' : '') + item.caption : '');
micropost += (item.description ?
(micropost.length ? '. ' : '') + item.description : '');
micropost += (item.micropost ?
(micropost.length ? '. ' : '') + item.micropost : '');
// Facebook does not support phrase search, so we manually
// need to test if the serch term is contained.
// (http://support.gnip.com/sources/facebook.html#Streams)
if (micropost.toLowerCase().replace(/\s/g, '')
.indexOf(query.toLowerCase().replace(/"/g, '')
.replace(/\s/g, '')) === -1) {
return cb(null);
}
var mediaUrl = item.type === 'video' ?
item.source : item.picture;
if (item.type === 'video') {
cleanVideoUrl(mediaUrl, function(cleanedMediaUrl) {
if ((cleanedMediaUrl) &&
(item.picture) &&
(cleanedMediaUrl !== mediaUrl)) {
results.push({
mediaUrl: cleanedMediaUrl
.replace(/s\.jpg$/gi, 'n.jpg'),
posterUrl: item.picture,
micropostUrl: 'https://www.facebook.com/' +
'permalink.php?story_fbid=' +
item.id.split(/_/)[1] + '&id=' + item.from.id,
micropost: cleanMicropost(micropost),
userProfileUrl:
'https://www.facebook.com/profile.php?id=' +
item.from.id,
type: item.type,
timestamp: timestamp,
publicationDate: getIsoDateString(timestamp),
socialInteractions: {
likes: item.likes ? item.likes.count : null,
shares: item.shares ? item.shares.count : null,
comments: item.comments ?
item.comments.data.length : null,
views: null
}
});
}
cb(null);
});
} else {
results.push({
mediaUrl: mediaUrl.replace(/s\.jpg$/gi, 'n.jpg'),
posterUrl: item.picture,
micropostUrl:
'https://www.facebook.com/permalink.php?' +
'story_fbid=' + item.id.split(/_/)[1] + '&id=' +
item.from.id,
micropost: cleanMicropost(micropost),
userProfileUrl:
'https://www.facebook.com/profile.php?id=' +
item.from.id,
type: item.type,
timestamp: timestamp,
publicationDate: getIsoDateString(timestamp),
socialInteractions: {
likes: item.likes ? item.likes.count : null,
shares: item.shares ? item.shares.count : null,
comments: item.comments ? item.comments.count : null,
views: null
}
});
cb(null);
}
});
},
function() {
collectResults(results, currentService, pendingRequests);
}
);
} else {
collectResults(results, currentService, pendingRequests);
}
} catch(e) {
collectResults(results, currentService, pendingRequests);
}
});
},
TwitterNative: function(pendingRequests) {
var currentService = 'TwitterNative';
if (GLOBAL_config.DEBUG) {
console.log(currentService + ' *** ' + query);
}
twit.search(
{
q: query + ' ' + GLOBAL_config.MEDIA_PLATFORMS.join(' OR ') +
' -"RT "',
rpp: 20,
result_type: 'recent',
include_entities: true,
},
function(err, body) {
try {
var results = [];
if ((body.statuses) && (body.statuses.length)) {
var items = body.statuses;
for (var i = 0, len = items.length; i < len; i++) {
var item = items[i];
var mediaUrl = '';
if (item.entities && item.entities.media &&
item.entities.media.length > 0) {
mediaUrl = item.entities.media[0].media_url ?
item.entities.media[0].media_url :
item.entities.media[0].media_url_https;
var timestamp = Date.parse(item.created_at);
var publicationDate = getIsoDateString(timestamp);
var micropost = cleanMicropost(item.text);
var userProfileUrl = 'http://twitter.com/' +
item.user.screen_name;
var micropostUrl = 'http://twitter.com/' +
item.user.screen_name + '/status/' + item.id_str;
results.push({
mediaUrl: mediaUrl,
posterUrl: mediaUrl + ':thumb',
micropostUrl: micropostUrl,
micropost: micropost,
userProfileUrl: userProfileUrl,
type: 'photo',
timestamp: timestamp,
publicationDate: publicationDate,
socialInteractions: {
likes: item.favorite_count,
shares: item.retweet_count,
comments: null,
views: null
}
});
}
}
}
collectResults(results, currentService, pendingRequests);
} catch(e) {
collectResults([], currentService, pendingRequests);
}